Copper‐Catalyzed Tandem Cross‐Coupling/Annulation of Phenols with Ketoximes through Dual C−H Functionalization: Synthesis of Substituted 2‐Aryl‐1H‐indoles

Abstract A copper‐catalyzed cascade synthesis of substituted 2‐aryl‐ 1H ‐indoles from phenols and oximes is developed. This reaction involves dual C−H bond cleavage of phenols and cyclization with oximes and proceeds smoothly under mild conditions without any additives.